Method of perforating music-sheets.



G. H, DAVIS.

METHOD OI PERFORMING MUSIC-SHEETS.

UPLIGATION FILED Hmm, 1910.

54h44@ Patented July 12, 1910.

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METHOD 0F PERFORATING MUSIC SHEETS.

APPLIUATION FILED P11112, 1910.

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G. H. DAVIS.

METHOD OP PERFORMING MUSIC SHEETS.

'1=L10ATION FILED FEB.2,1910.

64A@ Patented Ju1y12,1910.

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.nur sfraarns 'GEORGE H'WLETT BAVES, DF 'WEST SERAN-GE, .NEW

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y llingehlcanon l'ed February To all whom it may concern:

Be it known that l, Geenen Hownnr'r l)Av1s,-a citizen of the United States, residing at West Orange, in the county of Essex and State of New Jersey, have invented new and useful Improvements in Methods of Perforating Music-Sheets, of which the following is a specification.

My present invention relates to a certain new and improved method of making" perforated music sheets or rollssuch as are employed to control the operation of thesound producing devices of self-playing musical instruments, and is in the nature of an improvement upon the .method set forth in my allowed a plication Serial No. 390,395, tiled. August 2 1907.

In carrying out the method according` to my aforesaid allowed application, l lirst ymake a master from an ordinary commercial perforated music roll by passing' the latter through the reader or selecting mech- .anism of a pattern-controlled, p11ncli-selecting porforating machine, which reader mech anism has one of its reader' or selector ele ments (say the central one of the series) arranged to control the outermost punch of the gang of punches on either side of the perforatii'lg machine, instead of the central. punch, as is customary. The master thus cut. will have an imperforato zone arranged centrally thereof extending longitudinally throughout its length with the note perforations that would ordinarily appear in'this central zone transposed along oneI edge of the sheet. Equidistant rack-holes are formed in this central zone in the master during the operation of punching the noteperforations, which rack-holes are formed by the central punch of the gang of punches, so that. said Vrack-holes must he in exact alinement with the note perforat-ions and thus an absolutely accurate -feed of` the master f when used ina copying perforator, must result, to the end that t-he music records or rolls cut from said master 7 will be exact duplicates thereof so far as the note perforations are concerned. The master thus formed with its central row of rack-holes and row of transposed perforations along one edge thereof, is then run through the reader mechanism of a` p erforating ma chine, which reader mechanism tralreader element transposed from its regular posit-ion, to a osition alongside one of the outermost rea er elements of the series Specification o' Letters 'Este-ut,

arranged has its centran raie.

, so that it will track with the forations in the master.v This transposed reader element controls the central punch in the gang of punches so that the perforated sheets or reeards out from the master will agree exactly with the original commercial music roll or pattern. It will loe seen therefore, accordingto the method of my said former application, (as far as the specific embodiment therein illustrated is concerned) transposed perthat the row of transposed perforations in the master has its position changed or altered relatively to the other rows of perfo rations, and this may not, in so-me instances, be entirely desirable, and herein is where the present method differs materially from the fmmer.

According to the present method, which forms'the subject-nn1tter of this application,d

varrangeurent of the different rows of perforations relatively to each otl'ier., Briefly and generally stated theprcsent invention vresides in the` herein described method of making perforated music records from a pattern having note perfor-ations, which method consists in making a' masvter from the pattern, in which master one or more rows of. the note perforations running longitudinally of the pattern or arc transposed or shifted laterally without altering the arrangement 'thereof 'relatively to the other rows of perforations, whereby to provide a rack-h01e zone between two adjacent rows of note perforations'; formin equidistant rack-holes in the said zone of the master, then cutting a record from the inas- Ater and retransposing in the record the said laterally shifteoilor Itransposed perforations ,to cause them to occupy the same position in the record that they econ iecd in the pattern. ln my prior Patent llo. 659,053,t dated October 2, 1900, it show and describe a perforating machine wherein the contre ing master is provided .withtuaclic-holes along its' opposite "edges laeyend the enten different rows of.

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I will now proceed to describe my improved method in connection with the accompanying drawings, in which- Figurel is a plan view of a portion vof a pattern from which the master is made. Fig. 2 isa similar View of a ortion of the master showing thel rackoles formedv therein. Fig. 3 is a similar View of the record formed from the master and corresponding with the pattern. Fig. 4 is a diagram'- matic view showing in perspective one form of mechanism for making a master according to my improved method, and Fig. 5, is a similar view showing one form of mechanism for making a record from said master.

In carrying my improved method'into practice I first take an ordinary commercial perforated music sheet, such as A, Fig. l, which ,I shall hereinafter refer to as the pattern, and from this pattern I cut a master B, Fig. 2, in which master some of the rows of note perforations a, are shifted or transposed laterally one punch space, Without altering the position or arrangement thereof relative to the other rows of perforations b' so as vto'leave an yimperforate rack-hole zone @between two adjacent. rows of '.perforations, said zone being preferably located centrally ofthe master sheet. In this rack-hole zone c, I cut a row of equidistant rack-holes d, running'longi# tudinally of the sheet and Ywhich occupy the position formerly occupied by ay row of the transposed or laterally shifted note-perforations. I then cut a record C, 3, from the master thus formed, employing the master as the pattern from which the record is cut, and retransposein the record the said' rows of transposed perforations so that they will occupy the same position insaid record that they occupied in the pattern A,it being understood that the rack-holes are entirely eliminated from the record, these being emf ployed only in the master to insure a true and accurate feed thereof.

.In the illustrated embodiment of the invention I have shown the rack-hole zone and row of rack-holes as located exactly centrally of the sheet, and I prefer this arrangement, but obviously this is vnot Vabsolutely necessary and they may be otherwise located without departing from the spirit of the invention. I have further indicated that the illustrated in my prior Patent No.

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transposed perfor-ationsl are preferably shifted laterally one punch space, but obviouslyv they may be shifted more than one punch space.

In Figs. l and 5, I have illustrated in a somewhat diagrammatic way one manner of means for practicing my improved method through the aid of mechanism, the showing heilig sutlicient to enable those skilled in the art to understand the invention. In practicing the invention in this manner I prefer to make use of a pattern-controlled punch selecting perforating machine of 'tige type 00,151, dated October 6, '1908,v and my allowed'copending application Serial No. 390,395, filed August 27, 1907; although with slight' alterations and additions any punching machine of the pattern-controlled punch selecting type may be employed.` -I will first describe somuch as i's necessary of the vperforating machine and its associated reader mechanism Afor making the master Il froman-o'rdi nary commercial music sheet; and `will then describe the copying perforating machine and its associated lreader with which the master coperates, butV will preface this description with the statement that so far as the punching instrilmentalities are c oncerned, these aresubstantially the same in both mechanisms.

Referring'to Fig 4,4 the reference numeral 1,`designates'a' suitable table or bedplate above which are arranged several 'series or r'ows of electromagnets 3, 3, said being supported in, U -shaped frames 4. 1 Pivotally connected to one leg of each U-shaped frame and suspended immediatel in front of the pole-pieces of eachv magnet is an ironbar 5, constituting the armatures for the magnets. To the upper endof each armature- 5, is connected a coil spring which tends to draw the lower end of its armature away from the fmagnet poles when the magnet is demagnetized. To the lower end of each armature 5, is attached a yrod or wirel'?, which transmits the motion of the armature to one of a series of punch-locking dogs or toggles S. The

lo'wer end of each dog lor toggle 8 isar ranged to 'engage and lock in position for aserles or gang of punchesv 9, which are loosely carriedin a verticall y operation one o reciprocating punch-blockl 10, which blocA 'also carries the dogs or toggles as 'is usual 1n constructions of this type. The punches 9, co-acting with the die-block 11, form vthe perforations in theV web or sheet to be punched, whether said web be the master lf or the record or linal product of the machine. The punch-block 10,'is reciprocated in any suitable manner, (not shown.)

'In the operation of the machine, as the.

pattern sheetpasses between the reader ele' ments, o'r fingers, presently to be described,

oca/loa the said elements find their Way through the note perforations in the pattern and completey the electric circuit or circuits through the punch-selecting magnets 3, 3a, causing an attraction of the armatures 5, and through the rod .connections 7, move the punch-locking dogs 8, in position to lock their correlated punches 9, and cause them to pass through the material of 'which the master is to be formed, which master is represented by 'the reference letter'iB,

:Figs 2 and 4.

Having briefly describedvthe perforating machine, the reader mechanism associated therewith and its advantages will now be set forth, it being understood that the said mechanism as employed in the master forming perforator is substantially the 'same in all essentials as the corresponding mechanism shown and described in my aforesaid patent and pending application.

The reader mechanism when of the electrical type herein shown, comprises essentially a rail'l, carrying a series of selector fingers 16, that are arranged to bear upon a contact bar or lroller 17, the said lingers and baror roller being in circuit with the electro-magnets 3, 3, as shown. "The pattern A, is caused to travel, by any suitable lneans, (such as shown in my aforesaid patent,)' between the fingers 16 and contact roller 17, and in so doing` the ends of the lingers pass through the ncte-perforations a and b in the pattern they will bear upon ,the contact roller 17 and thus complete the circuit through the electro-magnets 3, 3, causing their armatures -to actuate the punch-locking dogs 8, vso asto lock the punches 9, for operation.

In order that the master B,may be fed with absolute accuracy through the reader mechanism of the copying perforator presently to be described, I provide the master with equidistant rack-holes d, which rackholes in theinstance shown, are arranged centrally of the sheet throughout the length thereof as shown in'Fig'fQ. In order to prevent the said rack-holes in the master from intersectingI any of the note perforations that would ordinarily appear in the center or middle zone of thepatterny A, I transpose or shift laterally in the master, but Without altering their relative Aarrangei ment, lall the rows of note-perforations o,

tolone' or both sides of the rack-hole zone c,

said rows of transposed perforations being ffshiftedat least one punch space, so as to leave an imperforate zone (impertorate so far as girate perforations are concerned) between o adjacent rows of note perforations,.and in this zone the raclcholes are formed. In order to malte this transposi- 4tion I cut out of circuit one magnet as 30 .that/ls to control the locking ofthe punch at forms the rack-holes in the master, and,

shift the circuit connections from the selector l'ing'ers of all the other magnets, to one side of the magnet so cut out, at least one punch space laterally, so that they will lead to themagnets 3, 3a removed at least one punch space to one side of the said cut out magnet 30". It will be ap )arent therefore, with this larrang'ement o' the circuits,

4the master B, that is cut from the pattern A, will have a central imperforate zone c, extending' throughout the length thereof, and will also have its row of note-perfora- 'tions to one side of said zone shifted laterally, at least one punch space, but Without altering the arrangement of said rows of shifted or transposed' note-perforations relatively to the other rows of note perforations.

ln order to form the eqnidistant rackholes d, in the master simultaneously with the note punching operation and in exact alinement with the note perforations, l provide mechanical means for locking at regular intervals the rack-hole forming punch of the gang, said punch being locked say at every sixth reciprocation of the punch block. This mechanical punch-locking means may be the same as that shown and described in my aforesaid pending application, and consists of a rotary shaft 7b, arranged in front of the armature 30" of magnet 30, said shaft carrying a hub 77, provided with a 4plurality of equally spaced pins 72), said pins being arranged to successively engage the armature 30D at regular intervals and thuscause its correlated punch-locking' dog to lock the rack-hole formingl punch and form the row of rack-holes in the master. The shaft 7G, 'is given a step-bysicp rotation by any suitable means not shown, but preferably the means shown and described in my aforesaid allowed application. lnasinuch as the pins 79, are equally spaced and the shaft upon which they are mounted is regularly' operated, and inasmuch as the rack-hole forming' punch is in line with thc punchesl that form the note pcrforations, it

will be apparent that the rack-holes must be in accurate alinement with the notcperforations, hence an absolutely accurate feed .of the master, when associated with the copying perforator, must necessarily result and this is a most important consideration in perforating,machines of this typo, for it will be apparent that any variation bctween the feed of the master and the feed c: the sheets being cut therefrom will result in a distorted or imperfect recordu After the master has been formed in the manner describedfit is placed in the reader of -the copying perforator, Fig. 5', to make the records therefrom, it being understood that so far as the p erforating instrumentalitics are'conoerned these are the' same' as the mechanism heretofore described, except that the mechanical means for lockingl the rack hole forming punch is pnt out .of commission by removing the pins 75) from the hub 77, and connecting the magnet B0 in circuit with a`reader clement, or if desired the shaft carrying' the hub and pins may he eliminated entirely.

The reader mechanism for the copying perforator has its contac't roller 17 provided on its periphery with a plurality of equidistant studs or sprockets 17", arranged on the roller in position to take into the row of rack-holes d, iu the master, whereby to cause the latter to feed in a true and accu- `ate manner. The contact roller is of course rotated in any suitable manner. y

It is obvious that the electroinagne'ts 3, 3a, if placed in circuit as illustrated dia-- grainniatically in Fig. 5, will become active and attract their respective armatures 5, 'thereby causing the punches' 9, to become operative, resulting in a row of perforations across the paper web or record C, which represents the final product of the machine, or in otherv wordsthe perforated music roll to be used in the self-playing musical. in struments now found upon the market. If, however, an insulating strip is interposed between thecontact fingers 1G, and cylinder 17, such as the web of the master B, the electromagnets will be denergized, except those in circuit with such of the fingers as may register with the note-perforations in the master.

In making the final perforated music roll or record C, from the .master B, heretofore described, it will be apparent that the rows ofnote-perforations in the master that have been shifted laterally or transposed must be re-transposed to their original position, or the position they occupied in the pattern A, for it will be understood the recrd C, has no rack-holes therein. To accomplish this the selector lingers of the reader mechanism associated with the' master are transposed or shifted laterally one punch space so that they-will track with the rows of transposed perforations in the master and the circuit connections from these fingers leadvin regu lar order to the elect-romagiiets 3, 3 that control the locking of the gang of punches.

` In this manner the rows of transposed perfio forations in the master are re-transposed in the record C, so that they will occupy the same position in said record thatthey occupied in the pattern.

In the construction herein shown and described I have provided for the transposition of a plurality of rows of note perforations so that the rack-holes will appear in the longitudinal center-of the master B, because I have found in practice that one of the perforationsrepresenting what is known as the 29th note is seldom used, and further, because better results are secured f' eefiaoa in the feed and life of the master 'when the rack-holes are located 1n the center thereof. I wish it'understood however, 'that I do not -desire to be limited to the traniiposition of any specific number of rows of note per- 'forations or any particular location of the rack-holes, as obviously, according to the present method I may transpose any desired number of rows of note perforations without altering their arrangement relatively to the other rows of note perforations, and 'this latter result is one of the prominent features of the invention.

What I claim is: ,w

l. The method herein described of making perforated' music records from a pattern having note-perforations, which coni sists in making a master from a pattern in which master a row of the note-perfora vtions running longitudinally thereof is transposed' or shifted laterally'without val- `tering its arrangement relative to the other. rows of perforations so as to leave a rackhole zone'between two adjacent rows of note perforations, forming equidistant racleholes 1n thexnaster in said zone, then cutting a record from the master and reftransposlnn in the .record the said row of transpose perforations to cause 'the latter to occupy the same position 'in the record that they occupied in the pattern.

2. The method herein described of mall:- ing. perforated music records from a pattern having note -perforations, 'which consists in making a master from a pattern, in which master a plurality of rows of noteperforations running longitudinally of the pattern are transposed laterally so' as to eave 'a rack-hole zone between two adjacent rows of said perforations, forming equidis tant rack-holes in the master in the saidzonc, then cutting a record from the master" and retransposing in the record the said plurality of rows of transposed perforations to cause them to occupy the same position in the record they occupied in the pattern.

3. rIlhe method herein described ofmaku ing perforated music records from a pattern having note perforations, which consists in making a master from a pattern, in which master aplurality of rows of note-perforations running longitudinally ofthe pattern are transposed laterally one punch space so as to leave a rack-hole zone between two adjacent rows .of said perforations, forming cquidistant rack-holes in the master in the said zone, then cutting a record from the master andiretransposing in the record the said plurality oft rows of transposed perforations to cause' them to occupythe same position'in therecord they yoccupied in the pattern. f

4l. The method herein described of malin' ing perforated music records from' apatjtern having noteperforations, which consists in lao making a master from a pattern, in which master all the rows of note-perforations corresponding to those occupying a position between one longitudinal edge of the pattern and the center thereof -are transposed y laterally' one punch space without altering ltheir arrangement relative to the other rows of note-perforations, so as to provide a. central reich-hole zone in the master, forming 10 equidistant rack-holes in said zone, thencut- 'ting a record from the master and retransposing therein' the seid rows of transposed perforations to cause themto occupy the same position in the record that they occu lpied in the pattern.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses. GEORGE HOVVLETT DAVIS.

W'itnesses:

EDWIN H'. VOLCKMANN, HARVEY M. ROBERTS. 

